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[mirror_ubuntu-artful-kernel.git] / drivers / usb / host / r8a66597-hcd.c
1 /*
2 * R8A66597 HCD (Host Controller Driver)
3 *
4 * Copyright (C) 2006-2007 Renesas Solutions Corp.
5 * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
6 * Portions Copyright (C) 2004-2005 David Brownell
7 * Portions Copyright (C) 1999 Roman Weissgaerber
8 *
9 * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; version 2 of the License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 *
24 */
25
26 #include <linux/module.h>
27 #include <linux/kernel.h>
28 #include <linux/sched.h>
29 #include <linux/errno.h>
30 #include <linux/timer.h>
31 #include <linux/delay.h>
32 #include <linux/list.h>
33 #include <linux/interrupt.h>
34 #include <linux/usb.h>
35 #include <linux/usb/hcd.h>
36 #include <linux/platform_device.h>
37 #include <linux/io.h>
38 #include <linux/mm.h>
39 #include <linux/irq.h>
40 #include <linux/slab.h>
41 #include <asm/cacheflush.h>
42
43 #include "r8a66597.h"
44
45 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
46 MODULE_LICENSE("GPL");
47 MODULE_AUTHOR("Yoshihiro Shimoda");
48 MODULE_ALIAS("platform:r8a66597_hcd");
49
50 #define DRIVER_VERSION "2009-05-26"
51
52 static const char hcd_name[] = "r8a66597_hcd";
53
54 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
55 static int r8a66597_get_frame(struct usb_hcd *hcd);
56
57 /* this function must be called with interrupt disabled */
58 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
59 unsigned long reg)
60 {
61 u16 tmp;
62
63 tmp = r8a66597_read(r8a66597, INTENB0);
64 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
65 r8a66597_bset(r8a66597, 1 << pipenum, reg);
66 r8a66597_write(r8a66597, tmp, INTENB0);
67 }
68
69 /* this function must be called with interrupt disabled */
70 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
71 unsigned long reg)
72 {
73 u16 tmp;
74
75 tmp = r8a66597_read(r8a66597, INTENB0);
76 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
77 r8a66597_bclr(r8a66597, 1 << pipenum, reg);
78 r8a66597_write(r8a66597, tmp, INTENB0);
79 }
80
81 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
82 u16 usbspd, u8 upphub, u8 hubport, int port)
83 {
84 u16 val;
85 unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
86
87 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
88 r8a66597_write(r8a66597, val, devadd_reg);
89 }
90
91 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
92 {
93 u16 tmp;
94 int i = 0;
95
96 if (r8a66597->pdata->on_chip) {
97 clk_prepare_enable(r8a66597->clk);
98 do {
99 r8a66597_write(r8a66597, SCKE, SYSCFG0);
100 tmp = r8a66597_read(r8a66597, SYSCFG0);
101 if (i++ > 1000) {
102 printk(KERN_ERR "r8a66597: reg access fail.\n");
103 return -ENXIO;
104 }
105 } while ((tmp & SCKE) != SCKE);
106 r8a66597_write(r8a66597, 0x04, 0x02);
107 } else {
108 do {
109 r8a66597_write(r8a66597, USBE, SYSCFG0);
110 tmp = r8a66597_read(r8a66597, SYSCFG0);
111 if (i++ > 1000) {
112 printk(KERN_ERR "r8a66597: reg access fail.\n");
113 return -ENXIO;
114 }
115 } while ((tmp & USBE) != USBE);
116 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
117 r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata),
118 XTAL, SYSCFG0);
119
120 i = 0;
121 r8a66597_bset(r8a66597, XCKE, SYSCFG0);
122 do {
123 msleep(1);
124 tmp = r8a66597_read(r8a66597, SYSCFG0);
125 if (i++ > 500) {
126 printk(KERN_ERR "r8a66597: reg access fail.\n");
127 return -ENXIO;
128 }
129 } while ((tmp & SCKE) != SCKE);
130 }
131
132 return 0;
133 }
134
135 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
136 {
137 r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
138 udelay(1);
139
140 if (r8a66597->pdata->on_chip) {
141 clk_disable_unprepare(r8a66597->clk);
142 } else {
143 r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
144 r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
145 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
146 }
147 }
148
149 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
150 {
151 u16 val;
152
153 val = port ? DRPD : DCFM | DRPD;
154 r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
155 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
156
157 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
158 r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
159 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
160 }
161
162 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
163 {
164 u16 val, tmp;
165
166 r8a66597_write(r8a66597, 0, get_intenb_reg(port));
167 r8a66597_write(r8a66597, 0, get_intsts_reg(port));
168
169 r8a66597_port_power(r8a66597, port, 0);
170
171 do {
172 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
173 udelay(640);
174 } while (tmp == EDGESTS);
175
176 val = port ? DRPD : DCFM | DRPD;
177 r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
178 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
179 }
180
181 static int enable_controller(struct r8a66597 *r8a66597)
182 {
183 int ret, port;
184 u16 vif = r8a66597->pdata->vif ? LDRV : 0;
185 u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0;
186 u16 endian = r8a66597->pdata->endian ? BIGEND : 0;
187
188 ret = r8a66597_clock_enable(r8a66597);
189 if (ret < 0)
190 return ret;
191
192 r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
193 r8a66597_bset(r8a66597, USBE, SYSCFG0);
194
195 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
196 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
197 r8a66597_bset(r8a66597, BRDY0, BRDYENB);
198 r8a66597_bset(r8a66597, BEMP0, BEMPENB);
199
200 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
201 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
202 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
203 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
204
205 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
206
207 for (port = 0; port < r8a66597->max_root_hub; port++)
208 r8a66597_enable_port(r8a66597, port);
209
210 return 0;
211 }
212
213 static void disable_controller(struct r8a66597 *r8a66597)
214 {
215 int port;
216
217 /* disable interrupts */
218 r8a66597_write(r8a66597, 0, INTENB0);
219 r8a66597_write(r8a66597, 0, INTENB1);
220 r8a66597_write(r8a66597, 0, BRDYENB);
221 r8a66597_write(r8a66597, 0, BEMPENB);
222 r8a66597_write(r8a66597, 0, NRDYENB);
223
224 /* clear status */
225 r8a66597_write(r8a66597, 0, BRDYSTS);
226 r8a66597_write(r8a66597, 0, NRDYSTS);
227 r8a66597_write(r8a66597, 0, BEMPSTS);
228
229 for (port = 0; port < r8a66597->max_root_hub; port++)
230 r8a66597_disable_port(r8a66597, port);
231
232 r8a66597_clock_disable(r8a66597);
233 }
234
235 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
236 struct usb_device *udev)
237 {
238 struct r8a66597_device *dev;
239
240 if (udev->parent && udev->parent->devnum != 1)
241 udev = udev->parent;
242
243 dev = dev_get_drvdata(&udev->dev);
244 if (dev)
245 return dev->address;
246 else
247 return 0;
248 }
249
250 static int is_child_device(char *devpath)
251 {
252 return (devpath[2] ? 1 : 0);
253 }
254
255 static int is_hub_limit(char *devpath)
256 {
257 return ((strlen(devpath) >= 4) ? 1 : 0);
258 }
259
260 static void get_port_number(struct r8a66597 *r8a66597,
261 char *devpath, u16 *root_port, u16 *hub_port)
262 {
263 if (root_port) {
264 *root_port = (devpath[0] & 0x0F) - 1;
265 if (*root_port >= r8a66597->max_root_hub)
266 printk(KERN_ERR "r8a66597: Illegal root port number.\n");
267 }
268 if (hub_port)
269 *hub_port = devpath[2] & 0x0F;
270 }
271
272 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
273 {
274 u16 usbspd = 0;
275
276 switch (speed) {
277 case USB_SPEED_LOW:
278 usbspd = LSMODE;
279 break;
280 case USB_SPEED_FULL:
281 usbspd = FSMODE;
282 break;
283 case USB_SPEED_HIGH:
284 usbspd = HSMODE;
285 break;
286 default:
287 printk(KERN_ERR "r8a66597: unknown speed\n");
288 break;
289 }
290
291 return usbspd;
292 }
293
294 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
295 {
296 int idx;
297
298 idx = address / 32;
299 r8a66597->child_connect_map[idx] |= 1 << (address % 32);
300 }
301
302 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
303 {
304 int idx;
305
306 idx = address / 32;
307 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
308 }
309
310 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
311 {
312 u16 pipenum = pipe->info.pipenum;
313 const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
314 const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
315 const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
316
317 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */
318 dma_ch = R8A66597_PIPE_NO_DMA;
319
320 pipe->fifoaddr = fifoaddr[dma_ch];
321 pipe->fifosel = fifosel[dma_ch];
322 pipe->fifoctr = fifoctr[dma_ch];
323
324 if (pipenum == 0)
325 pipe->pipectr = DCPCTR;
326 else
327 pipe->pipectr = get_pipectr_addr(pipenum);
328
329 if (check_bulk_or_isoc(pipenum)) {
330 pipe->pipetre = get_pipetre_addr(pipenum);
331 pipe->pipetrn = get_pipetrn_addr(pipenum);
332 } else {
333 pipe->pipetre = 0;
334 pipe->pipetrn = 0;
335 }
336 }
337
338 static struct r8a66597_device *
339 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
340 {
341 if (usb_pipedevice(urb->pipe) == 0)
342 return &r8a66597->device0;
343
344 return dev_get_drvdata(&urb->dev->dev);
345 }
346
347 static int make_r8a66597_device(struct r8a66597 *r8a66597,
348 struct urb *urb, u8 addr)
349 {
350 struct r8a66597_device *dev;
351 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
352
353 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
354 if (dev == NULL)
355 return -ENOMEM;
356
357 dev_set_drvdata(&urb->dev->dev, dev);
358 dev->udev = urb->dev;
359 dev->address = addr;
360 dev->usb_address = usb_address;
361 dev->state = USB_STATE_ADDRESS;
362 dev->ep_in_toggle = 0;
363 dev->ep_out_toggle = 0;
364 INIT_LIST_HEAD(&dev->device_list);
365 list_add_tail(&dev->device_list, &r8a66597->child_device);
366
367 get_port_number(r8a66597, urb->dev->devpath,
368 &dev->root_port, &dev->hub_port);
369 if (!is_child_device(urb->dev->devpath))
370 r8a66597->root_hub[dev->root_port].dev = dev;
371
372 set_devadd_reg(r8a66597, dev->address,
373 get_r8a66597_usb_speed(urb->dev->speed),
374 get_parent_r8a66597_address(r8a66597, urb->dev),
375 dev->hub_port, dev->root_port);
376
377 return 0;
378 }
379
380 /* this function must be called with interrupt disabled */
381 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
382 {
383 u8 addr; /* R8A66597's address */
384 struct r8a66597_device *dev;
385
386 if (is_hub_limit(urb->dev->devpath)) {
387 dev_err(&urb->dev->dev, "External hub limit reached.\n");
388 return 0;
389 }
390
391 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
392 if (dev && dev->state >= USB_STATE_ADDRESS)
393 return dev->address;
394
395 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
396 if (r8a66597->address_map & (1 << addr))
397 continue;
398
399 dev_dbg(&urb->dev->dev, "alloc_address: r8a66597_addr=%d\n", addr);
400 r8a66597->address_map |= 1 << addr;
401
402 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
403 return 0;
404
405 return addr;
406 }
407
408 dev_err(&urb->dev->dev,
409 "cannot communicate with a USB device more than 10.(%x)\n",
410 r8a66597->address_map);
411
412 return 0;
413 }
414
415 /* this function must be called with interrupt disabled */
416 static void free_usb_address(struct r8a66597 *r8a66597,
417 struct r8a66597_device *dev, int reset)
418 {
419 int port;
420
421 if (!dev)
422 return;
423
424 dev_dbg(&dev->udev->dev, "free_addr: addr=%d\n", dev->address);
425
426 dev->state = USB_STATE_DEFAULT;
427 r8a66597->address_map &= ~(1 << dev->address);
428 dev->address = 0;
429 /*
430 * Only when resetting USB, it is necessary to erase drvdata. When
431 * a usb device with usb hub is disconnect, "dev->udev" is already
432 * freed on usb_desconnect(). So we cannot access the data.
433 */
434 if (reset)
435 dev_set_drvdata(&dev->udev->dev, NULL);
436 list_del(&dev->device_list);
437 kfree(dev);
438
439 for (port = 0; port < r8a66597->max_root_hub; port++) {
440 if (r8a66597->root_hub[port].dev == dev) {
441 r8a66597->root_hub[port].dev = NULL;
442 break;
443 }
444 }
445 }
446
447 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
448 u16 mask, u16 loop)
449 {
450 u16 tmp;
451 int i = 0;
452
453 do {
454 tmp = r8a66597_read(r8a66597, reg);
455 if (i++ > 1000000) {
456 printk(KERN_ERR "r8a66597: register%lx, loop %x "
457 "is timeout\n", reg, loop);
458 break;
459 }
460 ndelay(1);
461 } while ((tmp & mask) != loop);
462 }
463
464 /* this function must be called with interrupt disabled */
465 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
466 {
467 u16 tmp;
468
469 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
470 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
471 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
472 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
473 }
474
475 /* this function must be called with interrupt disabled */
476 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
477 {
478 u16 tmp;
479
480 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
481 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
482 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
483 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
484 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
485 }
486
487 /* this function must be called with interrupt disabled */
488 static void clear_all_buffer(struct r8a66597 *r8a66597,
489 struct r8a66597_pipe *pipe)
490 {
491 u16 tmp;
492
493 if (!pipe || pipe->info.pipenum == 0)
494 return;
495
496 pipe_stop(r8a66597, pipe);
497 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
498 tmp = r8a66597_read(r8a66597, pipe->pipectr);
499 tmp = r8a66597_read(r8a66597, pipe->pipectr);
500 tmp = r8a66597_read(r8a66597, pipe->pipectr);
501 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
502 }
503
504 /* this function must be called with interrupt disabled */
505 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
506 struct r8a66597_pipe *pipe, int toggle)
507 {
508 if (toggle)
509 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
510 else
511 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
512 }
513
514 static inline unsigned short mbw_value(struct r8a66597 *r8a66597)
515 {
516 if (r8a66597->pdata->on_chip)
517 return MBW_32;
518 else
519 return MBW_16;
520 }
521
522 /* this function must be called with interrupt disabled */
523 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
524 {
525 unsigned short mbw = mbw_value(r8a66597);
526
527 r8a66597_mdfy(r8a66597, mbw | pipenum, mbw | CURPIPE, CFIFOSEL);
528 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
529 }
530
531 /* this function must be called with interrupt disabled */
532 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
533 struct r8a66597_pipe *pipe)
534 {
535 unsigned short mbw = mbw_value(r8a66597);
536
537 cfifo_change(r8a66597, 0);
538 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D0FIFOSEL);
539 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D1FIFOSEL);
540
541 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE,
542 pipe->fifosel);
543 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
544 }
545
546 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
547 {
548 struct r8a66597_pipe *pipe = hep->hcpriv;
549
550 if (usb_pipeendpoint(urb->pipe) == 0)
551 return 0;
552 else
553 return pipe->info.pipenum;
554 }
555
556 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
557 {
558 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
559
560 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
561 }
562
563 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
564 int urb_pipe)
565 {
566 if (!dev)
567 return NULL;
568
569 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
570 }
571
572 /* this function must be called with interrupt disabled */
573 static void pipe_toggle_set(struct r8a66597 *r8a66597,
574 struct r8a66597_pipe *pipe,
575 struct urb *urb, int set)
576 {
577 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
578 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
579 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
580
581 if (!toggle)
582 return;
583
584 if (set)
585 *toggle |= 1 << endpoint;
586 else
587 *toggle &= ~(1 << endpoint);
588 }
589
590 /* this function must be called with interrupt disabled */
591 static void pipe_toggle_save(struct r8a66597 *r8a66597,
592 struct r8a66597_pipe *pipe,
593 struct urb *urb)
594 {
595 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
596 pipe_toggle_set(r8a66597, pipe, urb, 1);
597 else
598 pipe_toggle_set(r8a66597, pipe, urb, 0);
599 }
600
601 /* this function must be called with interrupt disabled */
602 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
603 struct r8a66597_pipe *pipe,
604 struct urb *urb)
605 {
606 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
607 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
608 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
609
610 if (!toggle)
611 return;
612
613 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
614 }
615
616 /* this function must be called with interrupt disabled */
617 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
618 struct r8a66597_pipe_info *info)
619 {
620 u16 val = 0;
621
622 if (info->pipenum == 0)
623 return;
624
625 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
626 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
627 r8a66597_write(r8a66597, info->pipenum, PIPESEL);
628 if (!info->dir_in)
629 val |= R8A66597_DIR;
630 if (info->type == R8A66597_BULK && info->dir_in)
631 val |= R8A66597_DBLB | R8A66597_SHTNAK;
632 val |= info->type | info->epnum;
633 r8a66597_write(r8a66597, val, PIPECFG);
634
635 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
636 PIPEBUF);
637 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
638 PIPEMAXP);
639 r8a66597_write(r8a66597, info->interval, PIPEPERI);
640 }
641
642 /* this function must be called with interrupt disabled */
643 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
644 {
645 struct r8a66597_pipe_info *info;
646 struct urb *urb = td->urb;
647
648 if (td->pipenum > 0) {
649 info = &td->pipe->info;
650 cfifo_change(r8a66597, 0);
651 pipe_buffer_setting(r8a66597, info);
652
653 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
654 usb_pipeout(urb->pipe)) &&
655 !usb_pipecontrol(urb->pipe)) {
656 r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
657 pipe_toggle_set(r8a66597, td->pipe, urb, 0);
658 clear_all_buffer(r8a66597, td->pipe);
659 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
660 usb_pipeout(urb->pipe), 1);
661 }
662 pipe_toggle_restore(r8a66597, td->pipe, urb);
663 }
664 }
665
666 /* this function must be called with interrupt disabled */
667 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
668 struct usb_endpoint_descriptor *ep)
669 {
670 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
671
672 memset(array, 0, sizeof(array));
673 switch (usb_endpoint_type(ep)) {
674 case USB_ENDPOINT_XFER_BULK:
675 if (usb_endpoint_dir_in(ep))
676 array[i++] = 4;
677 else {
678 array[i++] = 3;
679 array[i++] = 5;
680 }
681 break;
682 case USB_ENDPOINT_XFER_INT:
683 if (usb_endpoint_dir_in(ep)) {
684 array[i++] = 6;
685 array[i++] = 7;
686 array[i++] = 8;
687 } else
688 array[i++] = 9;
689 break;
690 case USB_ENDPOINT_XFER_ISOC:
691 if (usb_endpoint_dir_in(ep))
692 array[i++] = 2;
693 else
694 array[i++] = 1;
695 break;
696 default:
697 printk(KERN_ERR "r8a66597: Illegal type\n");
698 return 0;
699 }
700
701 i = 1;
702 min = array[0];
703 while (array[i] != 0) {
704 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
705 min = array[i];
706 i++;
707 }
708
709 return min;
710 }
711
712 static u16 get_r8a66597_type(__u8 type)
713 {
714 u16 r8a66597_type;
715
716 switch (type) {
717 case USB_ENDPOINT_XFER_BULK:
718 r8a66597_type = R8A66597_BULK;
719 break;
720 case USB_ENDPOINT_XFER_INT:
721 r8a66597_type = R8A66597_INT;
722 break;
723 case USB_ENDPOINT_XFER_ISOC:
724 r8a66597_type = R8A66597_ISO;
725 break;
726 default:
727 printk(KERN_ERR "r8a66597: Illegal type\n");
728 r8a66597_type = 0x0000;
729 break;
730 }
731
732 return r8a66597_type;
733 }
734
735 static u16 get_bufnum(u16 pipenum)
736 {
737 u16 bufnum = 0;
738
739 if (pipenum == 0)
740 bufnum = 0;
741 else if (check_bulk_or_isoc(pipenum))
742 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
743 else if (check_interrupt(pipenum))
744 bufnum = 4 + (pipenum - 6);
745 else
746 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
747
748 return bufnum;
749 }
750
751 static u16 get_buf_bsize(u16 pipenum)
752 {
753 u16 buf_bsize = 0;
754
755 if (pipenum == 0)
756 buf_bsize = 3;
757 else if (check_bulk_or_isoc(pipenum))
758 buf_bsize = R8A66597_BUF_BSIZE - 1;
759 else if (check_interrupt(pipenum))
760 buf_bsize = 0;
761 else
762 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
763
764 return buf_bsize;
765 }
766
767 /* this function must be called with interrupt disabled */
768 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
769 struct r8a66597_device *dev,
770 struct r8a66597_pipe *pipe,
771 struct urb *urb)
772 {
773 int i;
774 struct r8a66597_pipe_info *info = &pipe->info;
775 unsigned short mbw = mbw_value(r8a66597);
776
777 /* pipe dma is only for external controlles */
778 if (r8a66597->pdata->on_chip)
779 return;
780
781 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
782 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
783 if ((r8a66597->dma_map & (1 << i)) != 0)
784 continue;
785
786 dev_info(&dev->udev->dev,
787 "address %d, EndpointAddress 0x%02x use "
788 "DMA FIFO\n", usb_pipedevice(urb->pipe),
789 info->dir_in ?
790 USB_ENDPOINT_DIR_MASK + info->epnum
791 : info->epnum);
792
793 r8a66597->dma_map |= 1 << i;
794 dev->dma_map |= 1 << i;
795 set_pipe_reg_addr(pipe, i);
796
797 cfifo_change(r8a66597, 0);
798 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum,
799 mbw | CURPIPE, pipe->fifosel);
800
801 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
802 pipe->info.pipenum);
803 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
804 break;
805 }
806 }
807 }
808
809 /* this function must be called with interrupt disabled */
810 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
811 struct usb_host_endpoint *hep,
812 struct r8a66597_pipe_info *info)
813 {
814 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
815 struct r8a66597_pipe *pipe = hep->hcpriv;
816
817 dev_dbg(&dev->udev->dev, "enable_pipe:\n");
818
819 pipe->info = *info;
820 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
821 r8a66597->pipe_cnt[pipe->info.pipenum]++;
822 dev->pipe_cnt[pipe->info.pipenum]++;
823
824 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
825 }
826
827 static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb,
828 int status)
829 __releases(r8a66597->lock)
830 __acquires(r8a66597->lock)
831 {
832 if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) {
833 void *ptr;
834
835 for (ptr = urb->transfer_buffer;
836 ptr < urb->transfer_buffer + urb->transfer_buffer_length;
837 ptr += PAGE_SIZE)
838 flush_dcache_page(virt_to_page(ptr));
839 }
840
841 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
842 spin_unlock(&r8a66597->lock);
843 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status);
844 spin_lock(&r8a66597->lock);
845 }
846
847 /* this function must be called with interrupt disabled */
848 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
849 {
850 struct r8a66597_td *td, *next;
851 struct urb *urb;
852 struct list_head *list = &r8a66597->pipe_queue[pipenum];
853
854 if (list_empty(list))
855 return;
856
857 list_for_each_entry_safe(td, next, list, queue) {
858 if (td->address != address)
859 continue;
860
861 urb = td->urb;
862 list_del(&td->queue);
863 kfree(td);
864
865 if (urb)
866 r8a66597_urb_done(r8a66597, urb, -ENODEV);
867
868 break;
869 }
870 }
871
872 /* this function must be called with interrupt disabled */
873 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
874 struct r8a66597_device *dev)
875 {
876 int check_ep0 = 0;
877 u16 pipenum;
878
879 if (!dev)
880 return;
881
882 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
883 if (!dev->pipe_cnt[pipenum])
884 continue;
885
886 if (!check_ep0) {
887 check_ep0 = 1;
888 force_dequeue(r8a66597, 0, dev->address);
889 }
890
891 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
892 dev->pipe_cnt[pipenum] = 0;
893 force_dequeue(r8a66597, pipenum, dev->address);
894 }
895
896 dev_dbg(&dev->udev->dev, "disable_pipe\n");
897
898 r8a66597->dma_map &= ~(dev->dma_map);
899 dev->dma_map = 0;
900 }
901
902 static u16 get_interval(struct urb *urb, __u8 interval)
903 {
904 u16 time = 1;
905 int i;
906
907 if (urb->dev->speed == USB_SPEED_HIGH) {
908 if (interval > IITV)
909 time = IITV;
910 else
911 time = interval ? interval - 1 : 0;
912 } else {
913 if (interval > 128) {
914 time = IITV;
915 } else {
916 /* calculate the nearest value for PIPEPERI */
917 for (i = 0; i < 7; i++) {
918 if ((1 << i) < interval &&
919 (1 << (i + 1) > interval))
920 time = 1 << i;
921 }
922 }
923 }
924
925 return time;
926 }
927
928 static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
929 {
930 __u8 i;
931 unsigned long time = 1;
932
933 if (usb_pipeisoc(urb->pipe))
934 return 0;
935
936 if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
937 for (i = 0; i < (interval - 1); i++)
938 time *= 2;
939 time = time * 125 / 1000; /* uSOF -> msec */
940 } else {
941 time = interval;
942 }
943
944 return time;
945 }
946
947 /* this function must be called with interrupt disabled */
948 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
949 struct usb_host_endpoint *hep,
950 struct usb_endpoint_descriptor *ep)
951 {
952 struct r8a66597_pipe_info info;
953
954 info.pipenum = get_empty_pipenum(r8a66597, ep);
955 info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
956 info.epnum = usb_endpoint_num(ep);
957 info.maxpacket = usb_endpoint_maxp(ep);
958 info.type = get_r8a66597_type(usb_endpoint_type(ep));
959 info.bufnum = get_bufnum(info.pipenum);
960 info.buf_bsize = get_buf_bsize(info.pipenum);
961 if (info.type == R8A66597_BULK) {
962 info.interval = 0;
963 info.timer_interval = 0;
964 } else {
965 info.interval = get_interval(urb, ep->bInterval);
966 info.timer_interval = get_timer_interval(urb, ep->bInterval);
967 }
968 if (usb_endpoint_dir_in(ep))
969 info.dir_in = 1;
970 else
971 info.dir_in = 0;
972
973 enable_r8a66597_pipe(r8a66597, urb, hep, &info);
974 }
975
976 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
977 {
978 struct r8a66597_device *dev;
979
980 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
981 dev->state = USB_STATE_CONFIGURED;
982 }
983
984 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
985 u16 pipenum)
986 {
987 if (pipenum == 0 && usb_pipeout(urb->pipe))
988 enable_irq_empty(r8a66597, pipenum);
989 else
990 enable_irq_ready(r8a66597, pipenum);
991
992 if (!usb_pipeisoc(urb->pipe))
993 enable_irq_nrdy(r8a66597, pipenum);
994 }
995
996 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
997 {
998 disable_irq_ready(r8a66597, pipenum);
999 disable_irq_nrdy(r8a66597, pipenum);
1000 }
1001
1002 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
1003 {
1004 mod_timer(&r8a66597->rh_timer,
1005 jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
1006 }
1007
1008 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
1009 int connect)
1010 {
1011 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1012
1013 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1014 rh->scount = R8A66597_MAX_SAMPLING;
1015 if (connect)
1016 rh->port |= USB_PORT_STAT_CONNECTION;
1017 else
1018 rh->port &= ~USB_PORT_STAT_CONNECTION;
1019 rh->port |= USB_PORT_STAT_C_CONNECTION << 16;
1020
1021 r8a66597_root_hub_start_polling(r8a66597);
1022 }
1023
1024 /* this function must be called with interrupt disabled */
1025 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
1026 u16 syssts)
1027 __releases(r8a66597->lock)
1028 __acquires(r8a66597->lock)
1029 {
1030 if (syssts == SE0) {
1031 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1032 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1033 } else {
1034 if (syssts == FS_JSTS)
1035 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
1036 else if (syssts == LS_JSTS)
1037 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
1038
1039 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
1040 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
1041
1042 if (r8a66597->bus_suspended)
1043 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1044 }
1045
1046 spin_unlock(&r8a66597->lock);
1047 usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597));
1048 spin_lock(&r8a66597->lock);
1049 }
1050
1051 /* this function must be called with interrupt disabled */
1052 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
1053 {
1054 u16 speed = get_rh_usb_speed(r8a66597, port);
1055 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1056
1057 rh->port &= ~(USB_PORT_STAT_HIGH_SPEED | USB_PORT_STAT_LOW_SPEED);
1058 if (speed == HSMODE)
1059 rh->port |= USB_PORT_STAT_HIGH_SPEED;
1060 else if (speed == LSMODE)
1061 rh->port |= USB_PORT_STAT_LOW_SPEED;
1062
1063 rh->port &= ~USB_PORT_STAT_RESET;
1064 rh->port |= USB_PORT_STAT_ENABLE;
1065 }
1066
1067 /* this function must be called with interrupt disabled */
1068 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
1069 {
1070 struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
1071
1072 disable_r8a66597_pipe_all(r8a66597, dev);
1073 free_usb_address(r8a66597, dev, 0);
1074
1075 start_root_hub_sampling(r8a66597, port, 0);
1076 }
1077
1078 /* this function must be called with interrupt disabled */
1079 static void prepare_setup_packet(struct r8a66597 *r8a66597,
1080 struct r8a66597_td *td)
1081 {
1082 int i;
1083 __le16 *p = (__le16 *)td->urb->setup_packet;
1084 unsigned long setup_addr = USBREQ;
1085
1086 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1087 DCPMAXP);
1088 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1089
1090 for (i = 0; i < 4; i++) {
1091 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
1092 setup_addr += 2;
1093 }
1094 r8a66597_write(r8a66597, SUREQ, DCPCTR);
1095 }
1096
1097 /* this function must be called with interrupt disabled */
1098 static void prepare_packet_read(struct r8a66597 *r8a66597,
1099 struct r8a66597_td *td)
1100 {
1101 struct urb *urb = td->urb;
1102
1103 if (usb_pipecontrol(urb->pipe)) {
1104 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1105 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1106 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1107 if (urb->actual_length == 0) {
1108 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1109 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1110 }
1111 pipe_irq_disable(r8a66597, td->pipenum);
1112 pipe_start(r8a66597, td->pipe);
1113 pipe_irq_enable(r8a66597, urb, td->pipenum);
1114 } else {
1115 if (urb->actual_length == 0) {
1116 pipe_irq_disable(r8a66597, td->pipenum);
1117 pipe_setting(r8a66597, td);
1118 pipe_stop(r8a66597, td->pipe);
1119 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1120
1121 if (td->pipe->pipetre) {
1122 r8a66597_write(r8a66597, TRCLR,
1123 td->pipe->pipetre);
1124 r8a66597_write(r8a66597,
1125 DIV_ROUND_UP
1126 (urb->transfer_buffer_length,
1127 td->maxpacket),
1128 td->pipe->pipetrn);
1129 r8a66597_bset(r8a66597, TRENB,
1130 td->pipe->pipetre);
1131 }
1132
1133 pipe_start(r8a66597, td->pipe);
1134 pipe_irq_enable(r8a66597, urb, td->pipenum);
1135 }
1136 }
1137 }
1138
1139 /* this function must be called with interrupt disabled */
1140 static void prepare_packet_write(struct r8a66597 *r8a66597,
1141 struct r8a66597_td *td)
1142 {
1143 u16 tmp;
1144 struct urb *urb = td->urb;
1145
1146 if (usb_pipecontrol(urb->pipe)) {
1147 pipe_stop(r8a66597, td->pipe);
1148 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1149 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1150 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1151 if (urb->actual_length == 0) {
1152 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1153 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1154 }
1155 } else {
1156 if (urb->actual_length == 0)
1157 pipe_setting(r8a66597, td);
1158 if (td->pipe->pipetre)
1159 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1160 }
1161 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1162
1163 fifo_change_from_pipe(r8a66597, td->pipe);
1164 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1165 if (unlikely((tmp & FRDY) == 0))
1166 pipe_irq_enable(r8a66597, urb, td->pipenum);
1167 else
1168 packet_write(r8a66597, td->pipenum);
1169 pipe_start(r8a66597, td->pipe);
1170 }
1171
1172 /* this function must be called with interrupt disabled */
1173 static void prepare_status_packet(struct r8a66597 *r8a66597,
1174 struct r8a66597_td *td)
1175 {
1176 struct urb *urb = td->urb;
1177
1178 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1179 pipe_stop(r8a66597, td->pipe);
1180
1181 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1182 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1183 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1184 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1185 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1186 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1187 enable_irq_empty(r8a66597, 0);
1188 } else {
1189 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1190 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1191 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1192 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1193 enable_irq_ready(r8a66597, 0);
1194 }
1195 enable_irq_nrdy(r8a66597, 0);
1196 pipe_start(r8a66597, td->pipe);
1197 }
1198
1199 static int is_set_address(unsigned char *setup_packet)
1200 {
1201 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1202 setup_packet[1] == USB_REQ_SET_ADDRESS)
1203 return 1;
1204 else
1205 return 0;
1206 }
1207
1208 /* this function must be called with interrupt disabled */
1209 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1210 {
1211 BUG_ON(!td);
1212
1213 switch (td->type) {
1214 case USB_PID_SETUP:
1215 if (is_set_address(td->urb->setup_packet)) {
1216 td->set_address = 1;
1217 td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1218 td->urb);
1219 if (td->urb->setup_packet[2] == 0)
1220 return -EPIPE;
1221 }
1222 prepare_setup_packet(r8a66597, td);
1223 break;
1224 case USB_PID_IN:
1225 prepare_packet_read(r8a66597, td);
1226 break;
1227 case USB_PID_OUT:
1228 prepare_packet_write(r8a66597, td);
1229 break;
1230 case USB_PID_ACK:
1231 prepare_status_packet(r8a66597, td);
1232 break;
1233 default:
1234 printk(KERN_ERR "r8a66597: invalid type.\n");
1235 break;
1236 }
1237
1238 return 0;
1239 }
1240
1241 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1242 {
1243 if (usb_pipeisoc(urb->pipe)) {
1244 if (urb->number_of_packets == td->iso_cnt)
1245 return 1;
1246 }
1247
1248 /* control or bulk or interrupt */
1249 if ((urb->transfer_buffer_length <= urb->actual_length) ||
1250 (td->short_packet) || (td->zero_packet))
1251 return 1;
1252
1253 return 0;
1254 }
1255
1256 /* this function must be called with interrupt disabled */
1257 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1258 {
1259 unsigned long time;
1260
1261 BUG_ON(!td);
1262
1263 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1264 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1265 r8a66597->timeout_map |= 1 << td->pipenum;
1266 switch (usb_pipetype(td->urb->pipe)) {
1267 case PIPE_INTERRUPT:
1268 case PIPE_ISOCHRONOUS:
1269 time = 30;
1270 break;
1271 default:
1272 time = 300;
1273 break;
1274 }
1275
1276 mod_timer(&r8a66597->td_timer[td->pipenum],
1277 jiffies + msecs_to_jiffies(time));
1278 }
1279 }
1280
1281 /* this function must be called with interrupt disabled */
1282 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1283 u16 pipenum, struct urb *urb, int status)
1284 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1285 {
1286 int restart = 0;
1287 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1288
1289 r8a66597->timeout_map &= ~(1 << pipenum);
1290
1291 if (likely(td)) {
1292 if (td->set_address && (status != 0 || urb->unlinked))
1293 r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1294
1295 pipe_toggle_save(r8a66597, td->pipe, urb);
1296 list_del(&td->queue);
1297 kfree(td);
1298 }
1299
1300 if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1301 restart = 1;
1302
1303 if (likely(urb)) {
1304 if (usb_pipeisoc(urb->pipe))
1305 urb->start_frame = r8a66597_get_frame(hcd);
1306
1307 r8a66597_urb_done(r8a66597, urb, status);
1308 }
1309
1310 if (restart) {
1311 td = r8a66597_get_td(r8a66597, pipenum);
1312 if (unlikely(!td))
1313 return;
1314
1315 start_transfer(r8a66597, td);
1316 set_td_timer(r8a66597, td);
1317 }
1318 }
1319
1320 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1321 {
1322 u16 tmp;
1323 int rcv_len, bufsize, urb_len, size;
1324 u16 *buf;
1325 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1326 struct urb *urb;
1327 int finish = 0;
1328 int status = 0;
1329
1330 if (unlikely(!td))
1331 return;
1332 urb = td->urb;
1333
1334 fifo_change_from_pipe(r8a66597, td->pipe);
1335 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1336 if (unlikely((tmp & FRDY) == 0)) {
1337 pipe_stop(r8a66597, td->pipe);
1338 pipe_irq_disable(r8a66597, pipenum);
1339 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum);
1340 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1341 return;
1342 }
1343
1344 /* prepare parameters */
1345 rcv_len = tmp & DTLN;
1346 if (usb_pipeisoc(urb->pipe)) {
1347 buf = (u16 *)(urb->transfer_buffer +
1348 urb->iso_frame_desc[td->iso_cnt].offset);
1349 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1350 } else {
1351 buf = (void *)urb->transfer_buffer + urb->actual_length;
1352 urb_len = urb->transfer_buffer_length - urb->actual_length;
1353 }
1354 bufsize = min(urb_len, (int) td->maxpacket);
1355 if (rcv_len <= bufsize) {
1356 size = rcv_len;
1357 } else {
1358 size = bufsize;
1359 status = -EOVERFLOW;
1360 finish = 1;
1361 }
1362
1363 /* update parameters */
1364 urb->actual_length += size;
1365 if (rcv_len == 0)
1366 td->zero_packet = 1;
1367 if (rcv_len < bufsize) {
1368 td->short_packet = 1;
1369 }
1370 if (usb_pipeisoc(urb->pipe)) {
1371 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1372 urb->iso_frame_desc[td->iso_cnt].status = status;
1373 td->iso_cnt++;
1374 finish = 0;
1375 }
1376
1377 /* check transfer finish */
1378 if (finish || check_transfer_finish(td, urb)) {
1379 pipe_stop(r8a66597, td->pipe);
1380 pipe_irq_disable(r8a66597, pipenum);
1381 finish = 1;
1382 }
1383
1384 /* read fifo */
1385 if (urb->transfer_buffer) {
1386 if (size == 0)
1387 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1388 else
1389 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1390 buf, size);
1391 }
1392
1393 if (finish && pipenum != 0)
1394 finish_request(r8a66597, td, pipenum, urb, status);
1395 }
1396
1397 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1398 {
1399 u16 tmp;
1400 int bufsize, size;
1401 u16 *buf;
1402 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1403 struct urb *urb;
1404
1405 if (unlikely(!td))
1406 return;
1407 urb = td->urb;
1408
1409 fifo_change_from_pipe(r8a66597, td->pipe);
1410 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1411 if (unlikely((tmp & FRDY) == 0)) {
1412 pipe_stop(r8a66597, td->pipe);
1413 pipe_irq_disable(r8a66597, pipenum);
1414 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum);
1415 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1416 return;
1417 }
1418
1419 /* prepare parameters */
1420 bufsize = td->maxpacket;
1421 if (usb_pipeisoc(urb->pipe)) {
1422 buf = (u16 *)(urb->transfer_buffer +
1423 urb->iso_frame_desc[td->iso_cnt].offset);
1424 size = min(bufsize,
1425 (int)urb->iso_frame_desc[td->iso_cnt].length);
1426 } else {
1427 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1428 size = min_t(u32, bufsize,
1429 urb->transfer_buffer_length - urb->actual_length);
1430 }
1431
1432 /* write fifo */
1433 if (pipenum > 0)
1434 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1435 if (urb->transfer_buffer) {
1436 r8a66597_write_fifo(r8a66597, td->pipe, buf, size);
1437 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1438 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1439 }
1440
1441 /* update parameters */
1442 urb->actual_length += size;
1443 if (usb_pipeisoc(urb->pipe)) {
1444 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1445 urb->iso_frame_desc[td->iso_cnt].status = 0;
1446 td->iso_cnt++;
1447 }
1448
1449 /* check transfer finish */
1450 if (check_transfer_finish(td, urb)) {
1451 disable_irq_ready(r8a66597, pipenum);
1452 enable_irq_empty(r8a66597, pipenum);
1453 if (!usb_pipeisoc(urb->pipe))
1454 enable_irq_nrdy(r8a66597, pipenum);
1455 } else
1456 pipe_irq_enable(r8a66597, urb, pipenum);
1457 }
1458
1459
1460 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1461 {
1462 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1463 struct urb *urb;
1464 u8 finish = 0;
1465
1466 if (unlikely(!td))
1467 return;
1468 urb = td->urb;
1469
1470 switch (td->type) {
1471 case USB_PID_IN:
1472 case USB_PID_OUT:
1473 if (check_transfer_finish(td, urb))
1474 td->type = USB_PID_ACK;
1475 break;
1476 case USB_PID_SETUP:
1477 if (urb->transfer_buffer_length == urb->actual_length)
1478 td->type = USB_PID_ACK;
1479 else if (usb_pipeout(urb->pipe))
1480 td->type = USB_PID_OUT;
1481 else
1482 td->type = USB_PID_IN;
1483 break;
1484 case USB_PID_ACK:
1485 finish = 1;
1486 break;
1487 }
1488
1489 if (finish || status != 0 || urb->unlinked)
1490 finish_request(r8a66597, td, 0, urb, status);
1491 else
1492 start_transfer(r8a66597, td);
1493 }
1494
1495 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1496 {
1497 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1498
1499 if (td) {
1500 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1501
1502 if (pid == PID_NAK)
1503 return -ECONNRESET;
1504 else
1505 return -EPIPE;
1506 }
1507 return 0;
1508 }
1509
1510 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1511 {
1512 u16 check;
1513 u16 pipenum;
1514 u16 mask;
1515 struct r8a66597_td *td;
1516
1517 mask = r8a66597_read(r8a66597, BRDYSTS)
1518 & r8a66597_read(r8a66597, BRDYENB);
1519 r8a66597_write(r8a66597, ~mask, BRDYSTS);
1520 if (mask & BRDY0) {
1521 td = r8a66597_get_td(r8a66597, 0);
1522 if (td && td->type == USB_PID_IN)
1523 packet_read(r8a66597, 0);
1524 else
1525 pipe_irq_disable(r8a66597, 0);
1526 check_next_phase(r8a66597, 0);
1527 }
1528
1529 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1530 check = 1 << pipenum;
1531 if (mask & check) {
1532 td = r8a66597_get_td(r8a66597, pipenum);
1533 if (unlikely(!td))
1534 continue;
1535
1536 if (td->type == USB_PID_IN)
1537 packet_read(r8a66597, pipenum);
1538 else if (td->type == USB_PID_OUT)
1539 packet_write(r8a66597, pipenum);
1540 }
1541 }
1542 }
1543
1544 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1545 {
1546 u16 tmp;
1547 u16 check;
1548 u16 pipenum;
1549 u16 mask;
1550 struct r8a66597_td *td;
1551
1552 mask = r8a66597_read(r8a66597, BEMPSTS)
1553 & r8a66597_read(r8a66597, BEMPENB);
1554 r8a66597_write(r8a66597, ~mask, BEMPSTS);
1555 if (mask & BEMP0) {
1556 cfifo_change(r8a66597, 0);
1557 td = r8a66597_get_td(r8a66597, 0);
1558 if (td && td->type != USB_PID_OUT)
1559 disable_irq_empty(r8a66597, 0);
1560 check_next_phase(r8a66597, 0);
1561 }
1562
1563 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1564 check = 1 << pipenum;
1565 if (mask & check) {
1566 struct r8a66597_td *td;
1567 td = r8a66597_get_td(r8a66597, pipenum);
1568 if (unlikely(!td))
1569 continue;
1570
1571 tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1572 if ((tmp & INBUFM) == 0) {
1573 disable_irq_empty(r8a66597, pipenum);
1574 pipe_irq_disable(r8a66597, pipenum);
1575 finish_request(r8a66597, td, pipenum, td->urb,
1576 0);
1577 }
1578 }
1579 }
1580 }
1581
1582 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1583 {
1584 u16 check;
1585 u16 pipenum;
1586 u16 mask;
1587 int status;
1588
1589 mask = r8a66597_read(r8a66597, NRDYSTS)
1590 & r8a66597_read(r8a66597, NRDYENB);
1591 r8a66597_write(r8a66597, ~mask, NRDYSTS);
1592 if (mask & NRDY0) {
1593 cfifo_change(r8a66597, 0);
1594 status = get_urb_error(r8a66597, 0);
1595 pipe_irq_disable(r8a66597, 0);
1596 check_next_phase(r8a66597, status);
1597 }
1598
1599 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1600 check = 1 << pipenum;
1601 if (mask & check) {
1602 struct r8a66597_td *td;
1603 td = r8a66597_get_td(r8a66597, pipenum);
1604 if (unlikely(!td))
1605 continue;
1606
1607 status = get_urb_error(r8a66597, pipenum);
1608 pipe_irq_disable(r8a66597, pipenum);
1609 pipe_stop(r8a66597, td->pipe);
1610 finish_request(r8a66597, td, pipenum, td->urb, status);
1611 }
1612 }
1613 }
1614
1615 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1616 {
1617 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1618 u16 intsts0, intsts1, intsts2;
1619 u16 intenb0, intenb1, intenb2;
1620 u16 mask0, mask1, mask2;
1621 int status;
1622
1623 spin_lock(&r8a66597->lock);
1624
1625 intsts0 = r8a66597_read(r8a66597, INTSTS0);
1626 intsts1 = r8a66597_read(r8a66597, INTSTS1);
1627 intsts2 = r8a66597_read(r8a66597, INTSTS2);
1628 intenb0 = r8a66597_read(r8a66597, INTENB0);
1629 intenb1 = r8a66597_read(r8a66597, INTENB1);
1630 intenb2 = r8a66597_read(r8a66597, INTENB2);
1631
1632 mask2 = intsts2 & intenb2;
1633 mask1 = intsts1 & intenb1;
1634 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1635 if (mask2) {
1636 if (mask2 & ATTCH) {
1637 r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1638 r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1639
1640 /* start usb bus sampling */
1641 start_root_hub_sampling(r8a66597, 1, 1);
1642 }
1643 if (mask2 & DTCH) {
1644 r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1645 r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1646 r8a66597_usb_disconnect(r8a66597, 1);
1647 }
1648 if (mask2 & BCHG) {
1649 r8a66597_write(r8a66597, ~BCHG, INTSTS2);
1650 r8a66597_bclr(r8a66597, BCHGE, INTENB2);
1651 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1652 }
1653 }
1654
1655 if (mask1) {
1656 if (mask1 & ATTCH) {
1657 r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1658 r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1659
1660 /* start usb bus sampling */
1661 start_root_hub_sampling(r8a66597, 0, 1);
1662 }
1663 if (mask1 & DTCH) {
1664 r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1665 r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1666 r8a66597_usb_disconnect(r8a66597, 0);
1667 }
1668 if (mask1 & BCHG) {
1669 r8a66597_write(r8a66597, ~BCHG, INTSTS1);
1670 r8a66597_bclr(r8a66597, BCHGE, INTENB1);
1671 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1672 }
1673
1674 if (mask1 & SIGN) {
1675 r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1676 status = get_urb_error(r8a66597, 0);
1677 check_next_phase(r8a66597, status);
1678 }
1679 if (mask1 & SACK) {
1680 r8a66597_write(r8a66597, ~SACK, INTSTS1);
1681 check_next_phase(r8a66597, 0);
1682 }
1683 }
1684 if (mask0) {
1685 if (mask0 & BRDY)
1686 irq_pipe_ready(r8a66597);
1687 if (mask0 & BEMP)
1688 irq_pipe_empty(r8a66597);
1689 if (mask0 & NRDY)
1690 irq_pipe_nrdy(r8a66597);
1691 }
1692
1693 spin_unlock(&r8a66597->lock);
1694 return IRQ_HANDLED;
1695 }
1696
1697 /* this function must be called with interrupt disabled */
1698 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1699 {
1700 u16 tmp;
1701 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1702
1703 if (rh->port & USB_PORT_STAT_RESET) {
1704 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1705
1706 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1707 if ((tmp & USBRST) == USBRST) {
1708 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1709 dvstctr_reg);
1710 r8a66597_root_hub_start_polling(r8a66597);
1711 } else
1712 r8a66597_usb_connect(r8a66597, port);
1713 }
1714
1715 if (!(rh->port & USB_PORT_STAT_CONNECTION)) {
1716 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1717 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1718 }
1719
1720 if (rh->scount > 0) {
1721 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1722 if (tmp == rh->old_syssts) {
1723 rh->scount--;
1724 if (rh->scount == 0)
1725 r8a66597_check_syssts(r8a66597, port, tmp);
1726 else
1727 r8a66597_root_hub_start_polling(r8a66597);
1728 } else {
1729 rh->scount = R8A66597_MAX_SAMPLING;
1730 rh->old_syssts = tmp;
1731 r8a66597_root_hub_start_polling(r8a66597);
1732 }
1733 }
1734 }
1735
1736 static void r8a66597_interval_timer(unsigned long _r8a66597)
1737 {
1738 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1739 unsigned long flags;
1740 u16 pipenum;
1741 struct r8a66597_td *td;
1742
1743 spin_lock_irqsave(&r8a66597->lock, flags);
1744
1745 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1746 if (!(r8a66597->interval_map & (1 << pipenum)))
1747 continue;
1748 if (timer_pending(&r8a66597->interval_timer[pipenum]))
1749 continue;
1750
1751 td = r8a66597_get_td(r8a66597, pipenum);
1752 if (td)
1753 start_transfer(r8a66597, td);
1754 }
1755
1756 spin_unlock_irqrestore(&r8a66597->lock, flags);
1757 }
1758
1759 static void r8a66597_td_timer(unsigned long _r8a66597)
1760 {
1761 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1762 unsigned long flags;
1763 u16 pipenum;
1764 struct r8a66597_td *td, *new_td = NULL;
1765 struct r8a66597_pipe *pipe;
1766
1767 spin_lock_irqsave(&r8a66597->lock, flags);
1768 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1769 if (!(r8a66597->timeout_map & (1 << pipenum)))
1770 continue;
1771 if (timer_pending(&r8a66597->td_timer[pipenum]))
1772 continue;
1773
1774 td = r8a66597_get_td(r8a66597, pipenum);
1775 if (!td) {
1776 r8a66597->timeout_map &= ~(1 << pipenum);
1777 continue;
1778 }
1779
1780 if (td->urb->actual_length) {
1781 set_td_timer(r8a66597, td);
1782 break;
1783 }
1784
1785 pipe = td->pipe;
1786 pipe_stop(r8a66597, pipe);
1787
1788 new_td = td;
1789 do {
1790 list_move_tail(&new_td->queue,
1791 &r8a66597->pipe_queue[pipenum]);
1792 new_td = r8a66597_get_td(r8a66597, pipenum);
1793 if (!new_td) {
1794 new_td = td;
1795 break;
1796 }
1797 } while (td != new_td && td->address == new_td->address);
1798
1799 start_transfer(r8a66597, new_td);
1800
1801 if (td == new_td)
1802 r8a66597->timeout_map &= ~(1 << pipenum);
1803 else
1804 set_td_timer(r8a66597, new_td);
1805 break;
1806 }
1807 spin_unlock_irqrestore(&r8a66597->lock, flags);
1808 }
1809
1810 static void r8a66597_timer(unsigned long _r8a66597)
1811 {
1812 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1813 unsigned long flags;
1814 int port;
1815
1816 spin_lock_irqsave(&r8a66597->lock, flags);
1817
1818 for (port = 0; port < r8a66597->max_root_hub; port++)
1819 r8a66597_root_hub_control(r8a66597, port);
1820
1821 spin_unlock_irqrestore(&r8a66597->lock, flags);
1822 }
1823
1824 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1825 {
1826 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1827
1828 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1829 (urb->dev->state == USB_STATE_CONFIGURED))
1830 return 1;
1831 else
1832 return 0;
1833 }
1834
1835 static int r8a66597_start(struct usb_hcd *hcd)
1836 {
1837 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1838
1839 hcd->state = HC_STATE_RUNNING;
1840 return enable_controller(r8a66597);
1841 }
1842
1843 static void r8a66597_stop(struct usb_hcd *hcd)
1844 {
1845 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1846
1847 disable_controller(r8a66597);
1848 }
1849
1850 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1851 {
1852 unsigned int usb_address = usb_pipedevice(urb->pipe);
1853 u16 root_port, hub_port;
1854
1855 if (usb_address == 0) {
1856 get_port_number(r8a66597, urb->dev->devpath,
1857 &root_port, &hub_port);
1858 set_devadd_reg(r8a66597, 0,
1859 get_r8a66597_usb_speed(urb->dev->speed),
1860 get_parent_r8a66597_address(r8a66597, urb->dev),
1861 hub_port, root_port);
1862 }
1863 }
1864
1865 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1866 struct urb *urb,
1867 struct usb_host_endpoint *hep)
1868 {
1869 struct r8a66597_td *td;
1870 u16 pipenum;
1871
1872 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1873 if (td == NULL)
1874 return NULL;
1875
1876 pipenum = r8a66597_get_pipenum(urb, hep);
1877 td->pipenum = pipenum;
1878 td->pipe = hep->hcpriv;
1879 td->urb = urb;
1880 td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1881 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1882 !usb_pipein(urb->pipe));
1883 if (usb_pipecontrol(urb->pipe))
1884 td->type = USB_PID_SETUP;
1885 else if (usb_pipein(urb->pipe))
1886 td->type = USB_PID_IN;
1887 else
1888 td->type = USB_PID_OUT;
1889 INIT_LIST_HEAD(&td->queue);
1890
1891 return td;
1892 }
1893
1894 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1895 struct urb *urb,
1896 gfp_t mem_flags)
1897 {
1898 struct usb_host_endpoint *hep = urb->ep;
1899 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1900 struct r8a66597_td *td = NULL;
1901 int ret, request = 0;
1902 unsigned long flags;
1903
1904 spin_lock_irqsave(&r8a66597->lock, flags);
1905 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1906 ret = -ENODEV;
1907 goto error_not_linked;
1908 }
1909
1910 ret = usb_hcd_link_urb_to_ep(hcd, urb);
1911 if (ret)
1912 goto error_not_linked;
1913
1914 if (!hep->hcpriv) {
1915 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1916 GFP_ATOMIC);
1917 if (!hep->hcpriv) {
1918 ret = -ENOMEM;
1919 goto error;
1920 }
1921 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1922 if (usb_pipeendpoint(urb->pipe))
1923 init_pipe_info(r8a66597, urb, hep, &hep->desc);
1924 }
1925
1926 if (unlikely(check_pipe_config(r8a66597, urb)))
1927 init_pipe_config(r8a66597, urb);
1928
1929 set_address_zero(r8a66597, urb);
1930 td = r8a66597_make_td(r8a66597, urb, hep);
1931 if (td == NULL) {
1932 ret = -ENOMEM;
1933 goto error;
1934 }
1935 if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1936 request = 1;
1937 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1938 urb->hcpriv = td;
1939
1940 if (request) {
1941 if (td->pipe->info.timer_interval) {
1942 r8a66597->interval_map |= 1 << td->pipenum;
1943 mod_timer(&r8a66597->interval_timer[td->pipenum],
1944 jiffies + msecs_to_jiffies(
1945 td->pipe->info.timer_interval));
1946 } else {
1947 ret = start_transfer(r8a66597, td);
1948 if (ret < 0) {
1949 list_del(&td->queue);
1950 kfree(td);
1951 }
1952 }
1953 } else
1954 set_td_timer(r8a66597, td);
1955
1956 error:
1957 if (ret)
1958 usb_hcd_unlink_urb_from_ep(hcd, urb);
1959 error_not_linked:
1960 spin_unlock_irqrestore(&r8a66597->lock, flags);
1961 return ret;
1962 }
1963
1964 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1965 int status)
1966 {
1967 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1968 struct r8a66597_td *td;
1969 unsigned long flags;
1970 int rc;
1971
1972 spin_lock_irqsave(&r8a66597->lock, flags);
1973 rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1974 if (rc)
1975 goto done;
1976
1977 if (urb->hcpriv) {
1978 td = urb->hcpriv;
1979 pipe_stop(r8a66597, td->pipe);
1980 pipe_irq_disable(r8a66597, td->pipenum);
1981 disable_irq_empty(r8a66597, td->pipenum);
1982 finish_request(r8a66597, td, td->pipenum, urb, status);
1983 }
1984 done:
1985 spin_unlock_irqrestore(&r8a66597->lock, flags);
1986 return rc;
1987 }
1988
1989 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1990 struct usb_host_endpoint *hep)
1991 {
1992 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1993 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1994 struct r8a66597_td *td;
1995 struct urb *urb = NULL;
1996 u16 pipenum;
1997 unsigned long flags;
1998
1999 if (pipe == NULL)
2000 return;
2001 pipenum = pipe->info.pipenum;
2002
2003 if (pipenum == 0) {
2004 kfree(hep->hcpriv);
2005 hep->hcpriv = NULL;
2006 return;
2007 }
2008
2009 spin_lock_irqsave(&r8a66597->lock, flags);
2010 pipe_stop(r8a66597, pipe);
2011 pipe_irq_disable(r8a66597, pipenum);
2012 disable_irq_empty(r8a66597, pipenum);
2013 td = r8a66597_get_td(r8a66597, pipenum);
2014 if (td)
2015 urb = td->urb;
2016 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
2017 kfree(hep->hcpriv);
2018 hep->hcpriv = NULL;
2019 spin_unlock_irqrestore(&r8a66597->lock, flags);
2020 }
2021
2022 static int r8a66597_get_frame(struct usb_hcd *hcd)
2023 {
2024 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2025 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
2026 }
2027
2028 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
2029 {
2030 int chix;
2031 struct usb_device *childdev;
2032
2033 if (udev->state == USB_STATE_CONFIGURED &&
2034 udev->parent && udev->parent->devnum > 1 &&
2035 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
2036 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
2037
2038 usb_hub_for_each_child(udev, chix, childdev)
2039 collect_usb_address_map(childdev, map);
2040 }
2041
2042 /* this function must be called with interrupt disabled */
2043 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
2044 int addr)
2045 {
2046 struct r8a66597_device *dev;
2047 struct list_head *list = &r8a66597->child_device;
2048
2049 list_for_each_entry(dev, list, device_list) {
2050 if (dev->usb_address != addr)
2051 continue;
2052
2053 return dev;
2054 }
2055
2056 printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr);
2057 return NULL;
2058 }
2059
2060 static void update_usb_address_map(struct r8a66597 *r8a66597,
2061 struct usb_device *root_hub,
2062 unsigned long *map)
2063 {
2064 int i, j, addr;
2065 unsigned long diff;
2066 unsigned long flags;
2067
2068 for (i = 0; i < 4; i++) {
2069 diff = r8a66597->child_connect_map[i] ^ map[i];
2070 if (!diff)
2071 continue;
2072
2073 for (j = 0; j < 32; j++) {
2074 if (!(diff & (1 << j)))
2075 continue;
2076
2077 addr = i * 32 + j;
2078 if (map[i] & (1 << j))
2079 set_child_connect_map(r8a66597, addr);
2080 else {
2081 struct r8a66597_device *dev;
2082
2083 spin_lock_irqsave(&r8a66597->lock, flags);
2084 dev = get_r8a66597_device(r8a66597, addr);
2085 disable_r8a66597_pipe_all(r8a66597, dev);
2086 free_usb_address(r8a66597, dev, 0);
2087 put_child_connect_map(r8a66597, addr);
2088 spin_unlock_irqrestore(&r8a66597->lock, flags);
2089 }
2090 }
2091 }
2092 }
2093
2094 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2095 struct usb_hcd *hcd)
2096 {
2097 struct usb_bus *bus;
2098 unsigned long now_map[4];
2099
2100 memset(now_map, 0, sizeof(now_map));
2101
2102 mutex_lock(&usb_bus_idr_lock);
2103 bus = idr_find(&usb_bus_idr, hcd->self.busnum);
2104 if (bus && bus->root_hub) {
2105 collect_usb_address_map(bus->root_hub, now_map);
2106 update_usb_address_map(r8a66597, bus->root_hub, now_map);
2107 }
2108 mutex_unlock(&usb_bus_idr_lock);
2109 }
2110
2111 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2112 {
2113 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2114 unsigned long flags;
2115 int i;
2116
2117 r8a66597_check_detect_child(r8a66597, hcd);
2118
2119 spin_lock_irqsave(&r8a66597->lock, flags);
2120
2121 *buf = 0; /* initialize (no change) */
2122
2123 for (i = 0; i < r8a66597->max_root_hub; i++) {
2124 if (r8a66597->root_hub[i].port & 0xffff0000)
2125 *buf |= 1 << (i + 1);
2126 }
2127
2128 spin_unlock_irqrestore(&r8a66597->lock, flags);
2129
2130 return (*buf != 0);
2131 }
2132
2133 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2134 struct usb_hub_descriptor *desc)
2135 {
2136 desc->bDescriptorType = USB_DT_HUB;
2137 desc->bHubContrCurrent = 0;
2138 desc->bNbrPorts = r8a66597->max_root_hub;
2139 desc->bDescLength = 9;
2140 desc->bPwrOn2PwrGood = 0;
2141 desc->wHubCharacteristics =
2142 cpu_to_le16(HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_NO_OCPM);
2143 desc->u.hs.DeviceRemovable[0] =
2144 ((1 << r8a66597->max_root_hub) - 1) << 1;
2145 desc->u.hs.DeviceRemovable[1] = ~0;
2146 }
2147
2148 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2149 u16 wIndex, char *buf, u16 wLength)
2150 {
2151 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2152 int ret;
2153 int port = (wIndex & 0x00FF) - 1;
2154 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2155 unsigned long flags;
2156
2157 ret = 0;
2158
2159 spin_lock_irqsave(&r8a66597->lock, flags);
2160 switch (typeReq) {
2161 case ClearHubFeature:
2162 case SetHubFeature:
2163 switch (wValue) {
2164 case C_HUB_OVER_CURRENT:
2165 case C_HUB_LOCAL_POWER:
2166 break;
2167 default:
2168 goto error;
2169 }
2170 break;
2171 case ClearPortFeature:
2172 if (wIndex > r8a66597->max_root_hub)
2173 goto error;
2174 if (wLength != 0)
2175 goto error;
2176
2177 switch (wValue) {
2178 case USB_PORT_FEAT_ENABLE:
2179 rh->port &= ~USB_PORT_STAT_POWER;
2180 break;
2181 case USB_PORT_FEAT_SUSPEND:
2182 break;
2183 case USB_PORT_FEAT_POWER:
2184 r8a66597_port_power(r8a66597, port, 0);
2185 break;
2186 case USB_PORT_FEAT_C_ENABLE:
2187 case USB_PORT_FEAT_C_SUSPEND:
2188 case USB_PORT_FEAT_C_CONNECTION:
2189 case USB_PORT_FEAT_C_OVER_CURRENT:
2190 case USB_PORT_FEAT_C_RESET:
2191 break;
2192 default:
2193 goto error;
2194 }
2195 rh->port &= ~(1 << wValue);
2196 break;
2197 case GetHubDescriptor:
2198 r8a66597_hub_descriptor(r8a66597,
2199 (struct usb_hub_descriptor *)buf);
2200 break;
2201 case GetHubStatus:
2202 *buf = 0x00;
2203 break;
2204 case GetPortStatus:
2205 if (wIndex > r8a66597->max_root_hub)
2206 goto error;
2207 *(__le32 *)buf = cpu_to_le32(rh->port);
2208 break;
2209 case SetPortFeature:
2210 if (wIndex > r8a66597->max_root_hub)
2211 goto error;
2212 if (wLength != 0)
2213 goto error;
2214
2215 switch (wValue) {
2216 case USB_PORT_FEAT_SUSPEND:
2217 break;
2218 case USB_PORT_FEAT_POWER:
2219 r8a66597_port_power(r8a66597, port, 1);
2220 rh->port |= USB_PORT_STAT_POWER;
2221 break;
2222 case USB_PORT_FEAT_RESET: {
2223 struct r8a66597_device *dev = rh->dev;
2224
2225 rh->port |= USB_PORT_STAT_RESET;
2226
2227 disable_r8a66597_pipe_all(r8a66597, dev);
2228 free_usb_address(r8a66597, dev, 1);
2229
2230 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2231 get_dvstctr_reg(port));
2232 mod_timer(&r8a66597->rh_timer,
2233 jiffies + msecs_to_jiffies(50));
2234 }
2235 break;
2236 default:
2237 goto error;
2238 }
2239 rh->port |= 1 << wValue;
2240 break;
2241 default:
2242 error:
2243 ret = -EPIPE;
2244 break;
2245 }
2246
2247 spin_unlock_irqrestore(&r8a66597->lock, flags);
2248 return ret;
2249 }
2250
2251 #if defined(CONFIG_PM)
2252 static int r8a66597_bus_suspend(struct usb_hcd *hcd)
2253 {
2254 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2255 int port;
2256
2257 dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__);
2258
2259 for (port = 0; port < r8a66597->max_root_hub; port++) {
2260 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2261 unsigned long dvstctr_reg = get_dvstctr_reg(port);
2262
2263 if (!(rh->port & USB_PORT_STAT_ENABLE))
2264 continue;
2265
2266 dev_dbg(&rh->dev->udev->dev, "suspend port = %d\n", port);
2267 r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */
2268 rh->port |= USB_PORT_STAT_SUSPEND;
2269
2270 if (rh->dev->udev->do_remote_wakeup) {
2271 msleep(3); /* waiting last SOF */
2272 r8a66597_bset(r8a66597, RWUPE, dvstctr_reg);
2273 r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port));
2274 r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port));
2275 }
2276 }
2277
2278 r8a66597->bus_suspended = 1;
2279
2280 return 0;
2281 }
2282
2283 static int r8a66597_bus_resume(struct usb_hcd *hcd)
2284 {
2285 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2286 int port;
2287
2288 dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__);
2289
2290 for (port = 0; port < r8a66597->max_root_hub; port++) {
2291 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2292 unsigned long dvstctr_reg = get_dvstctr_reg(port);
2293
2294 if (!(rh->port & USB_PORT_STAT_SUSPEND))
2295 continue;
2296
2297 dev_dbg(&rh->dev->udev->dev, "resume port = %d\n", port);
2298 rh->port &= ~USB_PORT_STAT_SUSPEND;
2299 rh->port |= USB_PORT_STAT_C_SUSPEND << 16;
2300 r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg);
2301 msleep(USB_RESUME_TIMEOUT);
2302 r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg);
2303 }
2304
2305 return 0;
2306
2307 }
2308 #else
2309 #define r8a66597_bus_suspend NULL
2310 #define r8a66597_bus_resume NULL
2311 #endif
2312
2313 static struct hc_driver r8a66597_hc_driver = {
2314 .description = hcd_name,
2315 .hcd_priv_size = sizeof(struct r8a66597),
2316 .irq = r8a66597_irq,
2317
2318 /*
2319 * generic hardware linkage
2320 */
2321 .flags = HCD_USB2,
2322
2323 .start = r8a66597_start,
2324 .stop = r8a66597_stop,
2325
2326 /*
2327 * managing i/o requests and associated device resources
2328 */
2329 .urb_enqueue = r8a66597_urb_enqueue,
2330 .urb_dequeue = r8a66597_urb_dequeue,
2331 .endpoint_disable = r8a66597_endpoint_disable,
2332
2333 /*
2334 * periodic schedule support
2335 */
2336 .get_frame_number = r8a66597_get_frame,
2337
2338 /*
2339 * root hub support
2340 */
2341 .hub_status_data = r8a66597_hub_status_data,
2342 .hub_control = r8a66597_hub_control,
2343 .bus_suspend = r8a66597_bus_suspend,
2344 .bus_resume = r8a66597_bus_resume,
2345 };
2346
2347 #if defined(CONFIG_PM)
2348 static int r8a66597_suspend(struct device *dev)
2349 {
2350 struct r8a66597 *r8a66597 = dev_get_drvdata(dev);
2351 int port;
2352
2353 dev_dbg(dev, "%s\n", __func__);
2354
2355 disable_controller(r8a66597);
2356
2357 for (port = 0; port < r8a66597->max_root_hub; port++) {
2358 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2359
2360 rh->port = 0x00000000;
2361 }
2362
2363 return 0;
2364 }
2365
2366 static int r8a66597_resume(struct device *dev)
2367 {
2368 struct r8a66597 *r8a66597 = dev_get_drvdata(dev);
2369 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
2370
2371 dev_dbg(dev, "%s\n", __func__);
2372
2373 enable_controller(r8a66597);
2374 usb_root_hub_lost_power(hcd->self.root_hub);
2375
2376 return 0;
2377 }
2378
2379 static const struct dev_pm_ops r8a66597_dev_pm_ops = {
2380 .suspend = r8a66597_suspend,
2381 .resume = r8a66597_resume,
2382 .poweroff = r8a66597_suspend,
2383 .restore = r8a66597_resume,
2384 };
2385
2386 #define R8A66597_DEV_PM_OPS (&r8a66597_dev_pm_ops)
2387 #else /* if defined(CONFIG_PM) */
2388 #define R8A66597_DEV_PM_OPS NULL
2389 #endif
2390
2391 static int r8a66597_remove(struct platform_device *pdev)
2392 {
2393 struct r8a66597 *r8a66597 = platform_get_drvdata(pdev);
2394 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
2395
2396 del_timer_sync(&r8a66597->rh_timer);
2397 usb_remove_hcd(hcd);
2398 iounmap(r8a66597->reg);
2399 if (r8a66597->pdata->on_chip)
2400 clk_put(r8a66597->clk);
2401 usb_put_hcd(hcd);
2402 return 0;
2403 }
2404
2405 static int r8a66597_probe(struct platform_device *pdev)
2406 {
2407 char clk_name[8];
2408 struct resource *res = NULL, *ires;
2409 int irq = -1;
2410 void __iomem *reg = NULL;
2411 struct usb_hcd *hcd = NULL;
2412 struct r8a66597 *r8a66597;
2413 int ret = 0;
2414 int i;
2415 unsigned long irq_trigger;
2416
2417 if (usb_disabled())
2418 return -ENODEV;
2419
2420 if (pdev->dev.dma_mask) {
2421 ret = -EINVAL;
2422 dev_err(&pdev->dev, "dma not supported\n");
2423 goto clean_up;
2424 }
2425
2426 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2427 if (!res) {
2428 ret = -ENODEV;
2429 dev_err(&pdev->dev, "platform_get_resource error.\n");
2430 goto clean_up;
2431 }
2432
2433 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2434 if (!ires) {
2435 ret = -ENODEV;
2436 dev_err(&pdev->dev,
2437 "platform_get_resource IORESOURCE_IRQ error.\n");
2438 goto clean_up;
2439 }
2440
2441 irq = ires->start;
2442 irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
2443
2444 reg = ioremap(res->start, resource_size(res));
2445 if (reg == NULL) {
2446 ret = -ENOMEM;
2447 dev_err(&pdev->dev, "ioremap error.\n");
2448 goto clean_up;
2449 }
2450
2451 if (pdev->dev.platform_data == NULL) {
2452 dev_err(&pdev->dev, "no platform data\n");
2453 ret = -ENODEV;
2454 goto clean_up;
2455 }
2456
2457 /* initialize hcd */
2458 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2459 if (!hcd) {
2460 ret = -ENOMEM;
2461 dev_err(&pdev->dev, "Failed to create hcd\n");
2462 goto clean_up;
2463 }
2464 r8a66597 = hcd_to_r8a66597(hcd);
2465 memset(r8a66597, 0, sizeof(struct r8a66597));
2466 platform_set_drvdata(pdev, r8a66597);
2467 r8a66597->pdata = dev_get_platdata(&pdev->dev);
2468 r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW;
2469
2470 if (r8a66597->pdata->on_chip) {
2471 snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
2472 r8a66597->clk = clk_get(&pdev->dev, clk_name);
2473 if (IS_ERR(r8a66597->clk)) {
2474 dev_err(&pdev->dev, "cannot get clock \"%s\"\n",
2475 clk_name);
2476 ret = PTR_ERR(r8a66597->clk);
2477 goto clean_up2;
2478 }
2479 r8a66597->max_root_hub = 1;
2480 } else
2481 r8a66597->max_root_hub = 2;
2482
2483 spin_lock_init(&r8a66597->lock);
2484 setup_timer(&r8a66597->rh_timer, r8a66597_timer,
2485 (unsigned long)r8a66597);
2486 r8a66597->reg = reg;
2487
2488 /* make sure no interrupts are pending */
2489 ret = r8a66597_clock_enable(r8a66597);
2490 if (ret < 0)
2491 goto clean_up3;
2492 disable_controller(r8a66597);
2493
2494 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2495 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2496 setup_timer(&r8a66597->td_timer[i], r8a66597_td_timer,
2497 (unsigned long)r8a66597);
2498 setup_timer(&r8a66597->interval_timer[i],
2499 r8a66597_interval_timer,
2500 (unsigned long)r8a66597);
2501 }
2502 INIT_LIST_HEAD(&r8a66597->child_device);
2503
2504 hcd->rsrc_start = res->start;
2505 hcd->has_tt = 1;
2506
2507 ret = usb_add_hcd(hcd, irq, irq_trigger);
2508 if (ret != 0) {
2509 dev_err(&pdev->dev, "Failed to add hcd\n");
2510 goto clean_up3;
2511 }
2512 device_wakeup_enable(hcd->self.controller);
2513
2514 return 0;
2515
2516 clean_up3:
2517 if (r8a66597->pdata->on_chip)
2518 clk_put(r8a66597->clk);
2519 clean_up2:
2520 usb_put_hcd(hcd);
2521
2522 clean_up:
2523 if (reg)
2524 iounmap(reg);
2525
2526 return ret;
2527 }
2528
2529 static struct platform_driver r8a66597_driver = {
2530 .probe = r8a66597_probe,
2531 .remove = r8a66597_remove,
2532 .driver = {
2533 .name = hcd_name,
2534 .pm = R8A66597_DEV_PM_OPS,
2535 },
2536 };
2537
2538 module_platform_driver(r8a66597_driver);
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